View Compilation Error

0_0_39910093_22716.cpp: In function 'int main()':
0_0_39910093_22716.cpp:58:17: error: 'memset' was not declared in this scope
   58 |                 memset(vis, 0, sizeof(vis));
      |                 ^~~~~~
0_0_39910093_22716.cpp:10:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    9 | #include <cmath>
  +++ |+#include <cstring>
   10 |